// SPDX-License-Identifier: GPL-2.0 /* * Generic sigma delta modulator driver * * Copyright (C) 2017, STMicroelectronics - All Rights Reserved * Author: Arnaud Pouliquen <arnaud.pouliquen@st.com>. */ #include <linux/iio/iio.h> #include <linux/iio/triggered_buffer.h> #include <linux/module.h> #include <linux/of_device.h> static const struct iio_info iio_sd_mod_iio_info; static const struct iio_chan_spec iio_sd_mod_ch = { .type = IIO_VOLTAGE, .indexed = 1, .scan_type = { .sign = 'u', .realbits = 1, .shift = 0, }, }; static int iio_sd_mod_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct iio_dev *iio; iio = devm_iio_device_alloc(dev, 0); if (!iio) return -ENOMEM; iio->dev.parent = dev; iio->dev.of_node = dev->of_node; iio->name = dev_name(dev); iio->info = &iio_sd_mod_iio_info; iio->modes = INDIO_BUFFER_HARDWARE; iio->num_channels = 1; iio->channels = &iio_sd_mod_ch; platform_set_drvdata(pdev, iio); return devm_iio_device_register(&pdev->dev, iio); } static const struct of_device_id sd_adc_of_match[] = { { .compatible = "sd-modulator" }, { .compatible = "ads1201" }, { } }; MODULE_DEVICE_TABLE(of, sd_adc_of_match); static struct platform_driver iio_sd_mod_adc = { .driver = { .name = "iio_sd_adc_mod", .of_match_table = of_match_ptr(sd_adc_of_match), }, .probe = iio_sd_mod_probe, }; module_platform_driver(iio_sd_mod_adc); MODULE_DESCRIPTION("Basic sigma delta modulator"); MODULE_AUTHOR("Arnaud Pouliquen <arnaud.pouliquen@st.com>"); MODULE_LICENSE("GPL v2");